Users of Mixxx software can make their dance floor audience happy with the virtual DJ deck that the free project offers. But keeping a crowd happy on the dance floor means doing more than just playing loud music; you have to set up the right track on the deck at the right time, cross-fading it nicely with the previous track without interrupting the groove. To do this perfectly, you have to match the beats of the two tracks.

If you want to use Linux to stream video over the Internet, you might have to fight your way through a jungle of codec alphabets. The available software is anything but intuitive. This article will help you pick the options that best fit your needs.